49 CFR § 392.1 - Scope of the rules in this part.

---
identifier: "/us/cfr/t49/s392.1"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 392.1 - Scope of the rules in this part."
title_number: 49
title_name: "Transportation"
section_number: "392.1"
section_name: "Scope of the rules in this part."
chapter_name: "FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "B"
subchapter_name: "FEDERAL MOTOR CARRIER SAFETY REGULATIONS"
part_number: "392"
part_name: "DRIVING OF COMMERCIAL MOTOR VEHICLES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 504, 13902, 31136, 31151, 31502; Section 112 of Pub. L. 103-311, 108 Stat. 1673, 1676 (1994), as amended by sec. 32509 of Pub. L. 112-141, 126 Stat. 405-805 (2012); and 49 CFR 1.87."
regulatory_source: "33 FR 19732, Dec. 25, 1968, unless otherwise noted."
cfr_part: "392"
---


# 392.1 Scope of the rules in this part.

(a) Every motor carrier, its officers, agents, representatives, and employees responsible for the management, maintenance, operation, or driving of commercial motor vehicles, or the hiring, supervising, training, assigning, or dispatching of drivers, shall be instructed in and comply with the rules in this part.

(b) The rules in this part do not apply to drivers of “pipeline welding trucks” as defined in 49 CFR 390.38(b).

[53 FR 18057, May 19, 1988, as amended at 60 FR 38746, July 28, 1995; 81 FR 47721, July 22, 2016]